Difference in the behaviour of GFP labelled Pa ATCC43949 bacteria when exposed to insect hemocytes from Manduca sexta (left panel) and mouse-derived macrophage cell lines (right panel). Note that Pa cells merely adhere to the surface of the insect phagocytes whereas in the presence of macrophages the bacteria grow as filaments that protrude from and invade the mouse phagocytes. Phagocytes are labelled with a TRITC-phalloidin conjugate to visualize their actin cytoskeletons.
Wilkinson et al. BMC Genomics 2009 10:302 doi:10.1186/1471-2164-10-302